Durel Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 3148
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 2109
 
  
 
G09F DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS 138
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 1127

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5811930 Electroluminescent lamp devices and their manufactureOct 15, 96Sep 22, 98[H01J, G09G, G09F]
5502357 Low cost inverter for EL lampOct 03, 94Mar 26, 96[H05B]
5349269 Power supply having dual inverters for electroluminescent lampsMar 29, 93Sep 20, 94[G09G]
5313141 Three terminal inverter for electroluminescent lampsApr 22, 93May 17, 94[G09G]
5276382 Lead attachment for electroluminescent lampAug 20, 91Jan 04, 94[H05B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2005/0067,952 Flexible, molded EL lampAbandonedSep 29, 03Mar 31, 05[H01J]
6787988 Process for treating previously coated phosphor particlesExpiredNov 13, 01Sep 07, 04[H01J]
6787993 Ink including low molecular weight PVDF/HFP resinExpiredJul 15, 02Sep 07, 04[H01J]
2004/0008,296 Quasi color LCDAbandonedJul 12, 02Jan 15, 04[G02F]
6597123 Inverter for driving EL lamp and liquid crystal displayExpiredJan 13, 03Jul 22, 03[G09G]
6580222 Inverter for driving EL lamp and light emitting diodesExpiredFeb 20, 01Jun 17, 03[G09F]
2003/0067,274 EL lamp emitting encoded lightAbandonedOct 09, 01Apr 10, 03[G09G]
6528943 EL lamp with increased phosphor densityExpiredJun 01, 01Mar 04, 03[H05B]
6465951 Electroluminescent lamp devices and their manufactureExpiredMay 01, 00Oct 15, 02[H01J]
6462485 EL driver for small semiconductor dieExpiredMar 14, 01Oct 08, 02[H05B]
6445128 EL panel made with low molecular weight PVDF/HFP resinExpiredAug 23, 99Sep 03, 02[H05B]
6433476 EL lamp with heater electrodeExpiredOct 12, 00Aug 13, 02[G02F]
2002/0080,597 EL lamp for a front lit displayAbandonedDec 21, 00Jun 27, 02[F21V, H05B]
6411726 Fingerprint detector using an EL lampExpiredOct 08, 98Jun 25, 02[G06K]
6407507 Personal electronic device having EL lamp and buzzer powered from a single inductorExpiredMay 09, 96Jun 18, 02[H05B]
6343027 Transformerless high voltage inverter using a fourth-order impedance networkExpiredFeb 23, 01Jan 29, 02[H02M]
6320323 EL driver with lamp discharge monitorExpiredMay 18, 00Nov 20, 01[H05B]
6297597 EL driver with low side current mirrorsExpiredApr 14, 00Oct 02, 01[H01J]
6111362 Controlling color shift in EL phosphorsExpiredNov 05, 98Aug 29, 00[G09G]
6091164 Single inverter with dual boostExpiredOct 29, 98Jul 18, 00[H02M]

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